Prothena Corp (NASDAQ:PRTA) reported quarterly losses of $(1.73) per share which missed the analyst consensus estimate of $(1.27) by 36.01 percent. This is a 241.8 percent decrease over earnings of $1.22 per share from the same period last year. The company reported quarterly sales of $4.420 million which missed the analyst consensus estimate of $6.180 million by 28.48 percent. This is a 96.65 percent decrease over sales of $132.014 million the same period last year.